When I launch dhclient on only one interface (100 or 2101) it's works fine and I get an ip address (class B on vlan 100 and class A on vlan 2101).
But if I launch dhclient on the second interface it's make an error:

Quote:

dhclient: Can't bind to dhcp address: Address already in use. Please make sure there is no other dhcp server runing and that there's no entry for dhcp or bootp in /etc/inetd.conf

Does someone had an idea about how to fix this problem and having my two vlans working?

You think that put the vlans configuration in the conf file instead of making it by hand will work better?
I'd prefer making this working before saving all the stuff.
But I'll try this tonight in order to see.